Form 1116: How to enter the income under "resourced by treaty" category?

Hi. A tax-tip posted in this site (https://turbotax.intuit.com/tax-tips/military/filing-irs-form-1116-to-claim-the-foreign-tax-credit/L...   listed as updated for the 2019 tax year) mentions  that TT supports as income category on 1116 the "resourced by treaty" one. Unfortunately, I was unable to find this category, although the post is updated for 2019 return. 

My income is passive (pensions and social security benefits) and is sourced in US. According to the treaty I am using and according to the IRS instructions for 1116, entering the income as resourced to the country of residence is the correct way of getting the tax credits I am seeking. 

Please advise if TT online deluxe supports this action and how to proceed.

Thank you.